G8 Environmental Minister Meeting (Kobe, Japan, May 2008) 
The Second Asia 3R Conference (Tokyo, Japan , March 2008)
Senior Officials Meeting on the 3R Initiative (Bonn, Germany, October 2007)
Ministerial Conference on the 3R Initiative (Tokyo, Japan, April 2005)
Senior Officials Meeting on the 3R Initiative(Tokyo, Japan, March 2006)
Asia 3R Conference(Tokyo, Japan, November 2006)
